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1da177e4 LT |
1 | /* |
2 | * Copyright(c) 1999 - 2004 Intel Corporation. All rights reserved. | |
3 | * | |
4 | * This program is free software; you can redistribute it and/or modify it | |
5 | * under the terms of the GNU General Public License as published by the | |
6 | * Free Software Foundation; either version 2 of the License, or | |
7 | * (at your option) any later version. | |
8 | * | |
9 | * This program is distributed in the hope that it will be useful, but | |
10 | * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY | |
11 | * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 | * for more details. | |
13 | * | |
14 | * You should have received a copy of the GNU General Public License along | |
15 | * with this program; if not, write to the Free Software Foundation, Inc., | |
16 | * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. | |
17 | * | |
18 | * The full GNU General Public License is included in this distribution in the | |
19 | * file called LICENSE. | |
20 | * | |
1da177e4 LT |
21 | */ |
22 | ||
23 | #ifndef __BOND_ALB_H__ | |
24 | #define __BOND_ALB_H__ | |
25 | ||
26 | #include <linux/if_ether.h> | |
27 | ||
28 | struct bonding; | |
29 | struct slave; | |
30 | ||
31 | #define BOND_ALB_INFO(bond) ((bond)->alb_info) | |
32 | #define SLAVE_TLB_INFO(slave) ((slave)->tlb_info) | |
33 | ||
411204a5 TI |
34 | #define ALB_TIMER_TICKS_PER_SEC 10 /* should be a divisor of HZ */ |
35 | #define BOND_TLB_REBALANCE_INTERVAL 10 /* In seconds, periodic re-balancing. | |
36 | * Used for division - never set | |
37 | * to zero !!! | |
38 | */ | |
39 | #define BOND_ALB_LP_INTERVAL 1 /* In seconds, periodic send of | |
40 | * learning packets to the switch | |
41 | */ | |
42 | ||
43 | #define BOND_TLB_REBALANCE_TICKS (BOND_TLB_REBALANCE_INTERVAL \ | |
44 | * ALB_TIMER_TICKS_PER_SEC) | |
45 | ||
46 | #define BOND_ALB_LP_TICKS (BOND_ALB_LP_INTERVAL \ | |
47 | * ALB_TIMER_TICKS_PER_SEC) | |
48 | ||
49 | #define TLB_HASH_TABLE_SIZE 256 /* The size of the clients hash table. | |
50 | * Note that this value MUST NOT be smaller | |
51 | * because the key hash table is BYTE wide ! | |
52 | */ | |
53 | ||
54 | ||
55 | #define TLB_NULL_INDEX 0xffffffff | |
56 | #define MAX_LP_BURST 3 | |
57 | ||
58 | /* rlb defs */ | |
59 | #define RLB_HASH_TABLE_SIZE 256 | |
60 | #define RLB_NULL_INDEX 0xffffffff | |
61 | #define RLB_UPDATE_DELAY (2*ALB_TIMER_TICKS_PER_SEC) /* 2 seconds */ | |
62 | #define RLB_ARP_BURST_SIZE 2 | |
63 | #define RLB_UPDATE_RETRY 3 /* 3-ticks - must be smaller than the rlb | |
64 | * rebalance interval (5 min). | |
65 | */ | |
66 | /* RLB_PROMISC_TIMEOUT = 10 sec equals the time that the current slave is | |
67 | * promiscuous after failover | |
68 | */ | |
69 | #define RLB_PROMISC_TIMEOUT (10*ALB_TIMER_TICKS_PER_SEC) | |
70 | ||
71 | ||
1da177e4 LT |
72 | struct tlb_client_info { |
73 | struct slave *tx_slave; /* A pointer to slave used for transmiting | |
74 | * packets to a Client that the Hash function | |
75 | * gave this entry index. | |
76 | */ | |
77 | u32 tx_bytes; /* Each Client acumulates the BytesTx that | |
78 | * were tranmitted to it, and after each | |
79 | * CallBack the LoadHistory is devided | |
80 | * by the balance interval | |
81 | */ | |
82 | u32 load_history; /* This field contains the amount of Bytes | |
83 | * that were transmitted to this client by | |
84 | * the server on the previous balance | |
85 | * interval in Bps. | |
86 | */ | |
87 | u32 next; /* The next Hash table entry index, assigned | |
88 | * to use the same adapter for transmit. | |
89 | */ | |
90 | u32 prev; /* The previous Hash table entry index, | |
91 | * assigned to use the same | |
92 | */ | |
93 | }; | |
94 | ||
95 | /* ------------------------------------------------------------------------- | |
96 | * struct rlb_client_info contains all info related to a specific rx client | |
97 | * connection. This is the Clients Hash Table entry struct | |
98 | * ------------------------------------------------------------------------- | |
99 | */ | |
100 | struct rlb_client_info { | |
d3bb52b0 AV |
101 | __be32 ip_src; /* the server IP address */ |
102 | __be32 ip_dst; /* the client IP address */ | |
1da177e4 LT |
103 | u8 mac_dst[ETH_ALEN]; /* the client MAC address */ |
104 | u32 next; /* The next Hash table entry index */ | |
105 | u32 prev; /* The previous Hash table entry index */ | |
106 | u8 assigned; /* checking whether this entry is assigned */ | |
107 | u8 ntt; /* flag - need to transmit client info */ | |
108 | struct slave *slave; /* the slave assigned to this client */ | |
109 | u8 tag; /* flag - need to tag skb */ | |
110 | unsigned short vlan_id; /* VLAN tag associated with IP address */ | |
111 | }; | |
112 | ||
113 | struct tlb_slave_info { | |
114 | u32 head; /* Index to the head of the bi-directional clients | |
115 | * hash table entries list. The entries in the list | |
116 | * are the entries that were assigned to use this | |
117 | * slave for transmit. | |
118 | */ | |
119 | u32 load; /* Each slave sums the loadHistory of all clients | |
120 | * assigned to it | |
121 | */ | |
122 | }; | |
123 | ||
124 | struct alb_bond_info { | |
125 | struct timer_list alb_timer; | |
126 | struct tlb_client_info *tx_hashtbl; /* Dynamically allocated */ | |
127 | spinlock_t tx_hashtbl_lock; | |
128 | u32 unbalanced_load; | |
129 | int tx_rebalance_counter; | |
130 | int lp_counter; | |
131 | /* -------- rlb parameters -------- */ | |
132 | int rlb_enabled; | |
133 | struct packet_type rlb_pkt_type; | |
134 | struct rlb_client_info *rx_hashtbl; /* Receive hash table */ | |
135 | spinlock_t rx_hashtbl_lock; | |
136 | u32 rx_hashtbl_head; | |
137 | u8 rx_ntt; /* flag - need to transmit | |
138 | * to all rx clients | |
139 | */ | |
140 | struct slave *next_rx_slave;/* next slave to be assigned | |
141 | * to a new rx client for | |
142 | */ | |
143 | u32 rlb_interval_counter; | |
144 | u8 primary_is_promisc; /* boolean */ | |
145 | u32 rlb_promisc_timeout_counter;/* counts primary | |
146 | * promiscuity time | |
147 | */ | |
148 | u32 rlb_update_delay_counter; | |
149 | u32 rlb_update_retry_counter;/* counter of retries | |
150 | * of client update | |
151 | */ | |
152 | u8 rlb_rebalance; /* flag - indicates that the | |
153 | * rx traffic should be | |
154 | * rebalanced | |
155 | */ | |
156 | struct vlan_entry *current_alb_vlan; | |
157 | }; | |
158 | ||
159 | int bond_alb_initialize(struct bonding *bond, int rlb_enabled); | |
160 | void bond_alb_deinitialize(struct bonding *bond); | |
161 | int bond_alb_init_slave(struct bonding *bond, struct slave *slave); | |
162 | void bond_alb_deinit_slave(struct bonding *bond, struct slave *slave); | |
163 | void bond_alb_handle_link_change(struct bonding *bond, struct slave *slave, char link); | |
164 | void bond_alb_handle_active_change(struct bonding *bond, struct slave *new_slave); | |
165 | int bond_alb_xmit(struct sk_buff *skb, struct net_device *bond_dev); | |
1b76b316 | 166 | void bond_alb_monitor(struct work_struct *); |
1da177e4 LT |
167 | int bond_alb_set_mac_address(struct net_device *bond_dev, void *addr); |
168 | void bond_alb_clear_vlan(struct bonding *bond, unsigned short vlan_id); | |
169 | #endif /* __BOND_ALB_H__ */ | |
170 |